Home / 5,378.56-7,422.16-3,020.96

Finding the Fourth Proportional to 5,378.56, 7,422.16 and 3,020.96

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Solution

The fourth proportional to 5,378.56, 7,422.16 and 3,020.96 is: 4,168.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.56 : 7,422.16 = 3,020.96 : x
  2. Step 2: Convert to fraction form
    5,378.56/7,422.16 = 3,020.96/x
  3. Step 3: Cross multiply
    5,378.56x = 7,422.16 × 3,020.96
  4. Step 4: Simplify right side
    5,378.56x = 22,422,048.47
  5. Step 5: Solve for x
    x = 22,422,048.47/5,378.56
  6. Step 6: Final answer
    x = 4,168.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.